| 摘要 |
The arrangement is such that to a transmission apparatus 15 of the subscriber side in a subscriber transmission system wherein the transmission apparatus 15 of the subscriber side which serves a plurality of subscribers 14 and a transmission apparatus 12 connected to a switching system 11 are connected to each other via multiplexed transmission lines, there are provided memories 25 and 26 to store originating and terminating call signals, and a controller 29 not only to control so that only subscriber transmitter-receivers 21A corresponding to a specific number of subscribers in the subscriber transmitter-receivers for transmitting and receiving signals of subscribers enter an operating state, but also to cause the memories 25 and 26 to operate, so that electric power is supplied only to circuits corresponding to a specific number of subscribers in the transmission apparatus 15 of the subscriber side by controlling through the controller 29 when the rate of telephone use is low. <IMAGE> |
